# US 8,570,952 B2 · Method and apparatus for selectively enabling reception of downlink signaling channels

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- Number: US 8,570,952 B2
- Document ID: US8570952B2
- Status: Granted
- Kind: B2
- Application number: 11/095,401
- Filed: 2005-03-31
- Published: 2005-11-03
- Granted: 2013-10-29
- Earliest claimed: 2004-04-29
- Assignees: InterDigital Technology Corporation
- Applicants: Stephen E. Terry; Guodong Zhang; Stephen G. Dick
- Inventors: Stephen E. Terry; Guodong Zhang; Stephen G. Dick
- Web page: https://patentgrep.com/patent/US8570952B2

## CPC

- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 52/0219: {where the power saving management affects multiple terminals}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/20: Control channels or signalling for resource management
- H04W 88/02: Terminal devices
- H04L 1/16: in which the return channel carries supervisory signals, e.g. repetition request signals
- H04W 8/24: Transfer of terminal data
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 74/00: Wireless channel access
- H04W 84/042: {Public Land Mobile systems, e.g. cellular systems}
- H04W 88/08: Access point devices
- Y02B 70/30: Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

In a wireless communication system including a wireless transmit/receive unit (WTRU) and at least one Node-B, a method and apparatus is used to selectively enable reception of at least one downlink (DL) enhanced uplink (EU) signaling channel established between the WTRU and the Node-B(s). During the operation of an enhanced dedicated channel (E-DCH), the WTRU monitors at least one DL EU signaling channel established between the WTRU and the Node-B(s) only when it is necessary, based on the WTRU's knowledge of at least one established standard procedure. The WTRU coordinates and consolidates DL signaling channel reception requirements of a plurality of channel allocation and/or data transmission procedures carried out by the WTRU in accordance with the established standard procedure. The WTRU determines whether to enable reception of at least one specific DL signaling channel based on the consolidated DL signaling channel reception requirements.

## Claims

### Claim 1

A method for channel resource allocation implemented in a wireless transmit/receive unit (WTRU) comprising:
sending, by the WTRU, an enhanced uplink (EU) channel allocation request via an uplink (UL) EU channel used for sending enhanced dedicated channel (E-DCH) data;
receiving, by the WTRU, channel allocation information via a downlink (DL) EU signaling channel in response to sending the channel allocation request; and
determining, by the WTRU, whether to utilize the DL EU signaling channel according to at least one predetermined signaling procedure using at least one synchronous hybrid automatic repeat request (HARQ) process that enables reception of the DL EU signaling channel in accordance with a preconfigured schedule.

### Claim 2 (depends on 1)

The method of claim 1, wherein the DL EU signaling channel is a relative grant channel.

### Claim 3 (depends on 1)

The method of claim 1, wherein the DL EU signaling channel is an absolute grant channel.

### Claim 4 (depends on 1)

The method of claim 1, wherein the synchronous HARQ process enables the WTRU to know exactly when feedback information will be received via the DL EU signaling channel.

### Claim 5

A method for channel resource allocation implemented in a wireless transmit/receive unit (WTRU), comprising:
sending, by the WTRU, an enhanced uplink (EU) channel allocation request including enhanced dedicated channel (E-DCH) data via at least one uplink (UL) channel;
receiving, by the WTRU, channel allocation information and data feedback information via respective downlink (DL) signaling channels in response to sending the channel allocation request including E-DCH data; and
determining, by the WTRU, whether to utilize at least one of the respective DL signaling channels according to at least one predetermined signaling procedure using at least one synchronous hybrid automatic repeat request (HARQ) process that enables reception of the at least one respective DL signaling channel in accordance with a preconfigured schedule.

### Claim 6 (depends on 5)

The method of claim 5, wherein the at least one respective DL signaling channel is a relative grant channel.

### Claim 7 (depends on 5)

The method of claim 5, wherein the at least one respective DL signaling channel is an absolute grant channel.

### Claim 8 (depends on 5)

The method of claim 5, wherein the synchronous HARQ process enables the WTRU to know exactly when feedback information will be received via the at least one respective DL signaling channel.

### Claim 9

A method for channel resource allocation implemented in a wireless transmit/receive unit (WTRU) comprising:
transmitting, by the WTRU, an enhanced uplink (EU) channel allocation request over an uplink (UL) EU channel, wherein the allocation request includes scheduling information;
monitoring, by the WTRU, a plurality of downlink (DL) EU signaling channels according to at least one predetermined signaling procedure;
receiving, by the WTRU, UL channel allocation information through at least one of the DL EU signaling channels; and
selectively utilizing, by the WTRU, at least one of the DL EU signaling channels according to the at least one predetermined signaling procedure using at least one synchronous hybrid automatic repeat request (HARQ) process that enables reception of the at least one DL EU signaling channel in accordance with a preconfigured schedule.

### Claim 10 (depends on 9)

The method of claim 9 further comprising:
transmitting a plurality of UL signaling data; and
transmitting enhanced dedicated channel (E-DCH) data through the UL EU channel.

### Claim 11 (depends on 10)

The method of claim 10 further comprising:
receiving further channel allocation information in response to the transmitted E-DCH data.

### Claim 12 (depends on 9)

The method of claim 9 further comprising:
monitoring the DL EU signaling channels for enhanced dedicated channel (E-DCH) data feedback information; and
receiving E-DCH data feedback information through the DL EU signaling channels including either a positive acknowledgement (ACK) message or a negative acknowledgement (NACK) message.

### Claim 13 (depends on 9)

The method of claim 9 further comprising:
monitoring the DL EU signaling channels for enhanced dedicated channel (E-DCH) channel resource allocation information; and
receiving E-DCH channel resource allocation information through the DL EU signaling channels including at least one of a Relative Grant (RG) and Absolute Grant (AG).

### Claim 14 (depends on 9)

The method of claim 9, wherein the scheduling information includes any one of the following:
traffic volume measurement information of enhanced dedicated channel (E-DCH) data stored in a buffer; and
available EU transmit power information.

### Claim 15 (depends on 9)

The method of claim 9 further comprising:
disabling reception of the DL EU signaling channels on a condition that the DL EU signaling channels are not required by the at least one predetermined signaling procedure.

### Claim 16 (depends on 9)

The method of claim 9, wherein the channel allocation information includes any one of the following:
a channelization code; and
an allowed transmit power.

### Claim 17 (depends on 9)

The method of claim 9, wherein the at least one DL EU signaling channel is a relative grant channel.

### Claim 18 (depends on 9)

The method of claim 9, wherein the at least one DL EU signaling channel is an absolute grant channel.

### Claim 19 (depends on 9)

The method of claim 9, wherein the synchronous HARQ process enables the WTRU to know exactly when feedback information will be received via the at least one DL EU signaling channel.

### Claim 20

A method for allocation processing implemented in a wireless transmit/receive unit (WTRU), comprising:
processing, by the WTRU, downlink (DL) signaling channel reception requirements of a plurality of channel allocation procedures; and
determining, by the WTRU, whether to utilize a DL signaling channel according to at least one predetermined signaling procedure using at least one synchronous hybrid automatic repeat request (HARQ) process that enables reception of the DL signaling channel in accordance with a preconfigured schedule.

### Claim 21 (depends on 20)

The method of claim 20, wherein the DL signaling channel is a relative grant channel.

### Claim 22 (depends on 20)

The method of claim 20, wherein the DL signaling channel is an absolute grant channel.

### Claim 23 (depends on 20)

The method of claim 20, wherein the synchronous HARQ process enables the WTRU to know exactly when feedback information will be received via the DL signaling channel.